package com.pumpkin.annotationdemo.reflection;

import lombok.NonNull;

import javax.sound.midi.VoiceStatus;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

/**
 * 分析性能问题 setAccessible
 */
public class Test10 {

    //普通方式调用
    public static void test01() {
        User user = new User();
        long startTime = System.currentTimeMillis();
        for (int i = 0; i < 1000000000; i++) {
            user.getName();
        }
        long endTime = System.currentTimeMillis();
        System.out.println("normal used:" + (endTime - startTime) + "ms");
    }
    //反射方式调用
    public static void test02() throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
        User user = new User();
        Class c1 = user.getClass();
        Method getName = c1.getDeclaredMethod("getName", null);

        long startTime = System.currentTimeMillis();
        for (int i = 0; i < 1000000000; i++) {
            getName.invoke(user, null);
        }
        long endTime = System.currentTimeMillis();
        System.out.println("normal used:" + (endTime - startTime) + "ms");
    }

    //反射方式调用  关闭安全检测
    public static void test03() throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
        User user = new User();
        Class c1 = user.getClass();
        Method getName = c1.getDeclaredMethod("getName", null);
        //关闭安全检测
        getName.setAccessible(true);
        long startTime = System.currentTimeMillis();
        for (int i = 0; i < 1000000000; i++) {
            getName.invoke(user, null);
        }
        long endTime = System.currentTimeMillis();
        System.out.println("normal used:" + (endTime - startTime) + "ms");
    }

    public static void main(String[] args) throws InvocationTargetException, NoSuchMethodException, IllegalAccessException {
        test01();
        test02();
        test03();
    }
}
